Data Sheet

Off-delay time 40ms
Number of NC contacts / for auxiliary contacts 0
Number of NO contacts / for auxiliary contacts 0
Number of CO contacts / for auxiliary contacts 0
Installation/ mounting/ dimensions
Mounting type screw fixing
● Side-by-side mounting
Yes
Height 58mm
Width 45mm
Depth 48mm
Installation altitude / at height above sea level /
maximum
1000m
Connections/ Terminals
Type of electrical connection
● for main current circuit
screw-type terminals
● for auxiliary and control current circuit
screw-type terminals
Type of connectable conductor cross-sections
● for main contacts
— solid
2x (1.5 ... 2.5 mm²), 2x (2.5 ... 6 mm²)
— finely stranded / with core end processing
2x (1 ... 2.5 mm²), 2x (2.5 ... 6 mm²), 1x 10 mm²
● at AWG conductors / for main contacts
2x (14 ... 10)
Type of connectable conductor cross-sections
● for auxiliary and control contacts
— solid
1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)
— finely stranded / with core end processing
1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)
— finely stranded / without core end
processing
1x (0.5 ... 2.5 mm²), 2x (0.5 ... 1.0 mm²)
● at AWG conductors / for auxiliary and control
contacts
1x (AWG 20 ... 12)
Tightening torque / for main contacts / with screw-
type terminals
2...2.5N·m
Tightening torque / for auxiliary and control contacts /
with screw-type terminals
0.5...0.6N·m
Tightening torque [lbf·in]
● for main contacts / with screw-type terminals
7...10.3lbf·in
● for auxiliary and control contacts / with screw-
type terminals
4.5...5.3lbf·in
Design of the thread / of the connection screw
● for main contacts
M4
● of the auxiliary and control contacts
M3
Wire stripping length / of the cable
● for main contacts
10mm
3RF2050-1AA26 Subject to change without notice
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09/13/2019 © Copyright Siemens